Cutting-machine.



R. D. PEARSON.

CUTTING MACHINE.

APPLICATION FILED MAR.1B. 1914.

THE NORRIS PETERS 60., PHOTO'LITHOH WASIIINO Y'QN. D r

R. D. PEARSON.

CUTTING MACHINE.

APPLICATION FILED MAR.18,1914.

1,123,919, Patented Ja11.5,1915.

4 SHEETS-SHEET 2.

R. D. PEARSON.

CUTTING MACHINE.

APPLICATION FILED MAR. 18, 1914.

1,123,919, Patented Jan.5, 1915.

4 SHEETS-SHEET 3.

Attorneys THE NORRIS PETERS C0 FHoro-LlTl-la, WASHINC TON, D, c.

R. D. PEARSON.

CUTTING MACHINE.

APPLICATION FILED MAR,18, 1914.

Patented Jan. 5, 1915.

4 SHEETS-SHEET 4.

Inventor Attorneys tiniarn srarns a r rains.

ROBERT D. PEARSON, or ALLENTOWN, rENnsYLvAnIA, ASSIGNOR TO A. r. PEARSON, or rate ALTO, CALIFORNIA.

CUTTING-MACHINE.

Application filed March 18, 1814.

To all whom, it may concern Be it known that 1, ROBERT D. PEARSON, a citizen of the United States, residing at Allentown, in the county of Lehigh and State of Pennsylvania, have invented a new and useful Cutting-Machine, of which the following is a specification.

This invention relates to cutting machines whereby any desired patterns or designs can be produced from different kinds of materials.

One of the objects of the invention is to provide a cutting head extending above the table of the machine and mounted for rotation so that it becomes unnecessary to turn the work while producing a pattern or, design but merely to turn the cutting head.

Another object is to provide improved means whereby the cutting element may be actuated at all times during the adjustment of the cutting head.

A further object is to provide improved means whereby the cutting head can be rotated at will so as to cause the cuts to be made in the desired directions within the material being out.

A. further object is to provide a feeder which rotates with the cutting head so that the work will always be fed in the proper direction relative to the cutting blade.

lVith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention herein disclosed, can be made within the scope of what is claimed, without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention has been shown.

In said drawings: Figure l is a vertical transverse section through the table and the lower portion of the cutting head, the driving mechanism, a portion of the adjusting mechanism, and. a portion of the feed being shown in section. Fig. 2 is a section on line AB Fig. 1. Fig. 3 is an enlarged section on line C-D Fig. 1. Fig. 1 is an enlarged section through one of the cutting blades and its holder and the standard of the cutting head. Fig. 5 is a view similar to Fig. 1 and showing a modified form of cutting blade seated in the standard of the cutting Specification of Letters Patent.

Patented Jan. 5, 1915..

Serial No. 825,627.

head. Fig. 6 is a side elevation of a portion of one form of cutting blade. Fig. 7 is a similar View of a portion of another form of cutting blade. Fi 8 is a similar view of another modified form of cutting blade. Fig. 9 1s a side elevation of a portion of a slightly modified form of cutting head and feeder, the securing bolts of the feeder being shown in section. Fig. 10 is a front elevation of the structure shown in Fig. 1. Fig. 11 is a side elevation of a portion of another form of cutting head. Fig. 12 is a plan view of the presser foot shown in Fig. 11, the stem thereof being shown in section. Fig. 13 is a side elevation of another modified form of cutting head. Fig. 141 is a section through the presser foot on the line EF Fig. 13. Fig. 15 is a bottom plan view of the base portion of the standard shown in Figs. 1 and 2. Fig. 16 is a vertical transverse section through a portion of a modified form of machine. Fig. 17 is a similar view showing another modified form of machine.

Referring to the figures by characters of reference 1 designates a table having an opening 2 in which is seated a cover plate 3 the upper surface of which is preferably flush with the top of the table. This cover plate has a central depending boss 1 which is hollow, as at 5, to receive a circular bearmg member or work support 6 tapered downwardly, this bearing member being provided with an annular flange 7 seated in a counter bore 8 and provided with suitable anti-friction bearings 9. The bearing memher 6 is engaged by the upwardly extending tubular hub 10 of a gear 11, this hub being journaled in the lower portion of the boss while the gear 11 is supported close to but under the boss. The hub 10 and bearing member 6 are preferably screwed together as shown and will, consequently, rotate together.

Gear 11 is constantly in mesh with a large gear 12 secured to a vertical shaft 18, the upper end of this shaft being journaled in the cover plate 3 while the lower end of the shaft is provided with a suitable bearing 14. A bevel gear 15 is secured to shaft 13 and meshes with a gear 16 secured to a horizontal shaft 17 on which is mounted a foot lever or treadle 18. It will be apparent that by manipulating this lever or treadle 18, shaft 13 can be caused to rotate in either direction and motion will therefore be transmitted therefrom through gears 12 and 11 to the hub 10 and the bearing member 6.

A hanger 19 is supported by the cover plate 3 and extending laterally from the lower portion of this hanger is a sleeve 20 in which is journaled a shaft 21 having a crank arm 22 at one end while its other end is provided with a disk 23. This disk is secured to the shaft 21 in any suitable manner so as to rotate therewith and formed upon or secured to one face of the disk is a friction clutch member 24. A disk 25 is slidably mounted on the sleeve 20 and carries a friction clutch member 26 which projects into the clutch member 24 but is held normally out of contact therewith by means of a spring 2'7 interposed between the two clutch members. Disk 25 has a pcripheral groove 28 for the reception of a driving belt 29 and, consequently, this disk constitutes a pulley which normally runs freely on the sleeve 20.

Fulcruined upon the hanger 19 is a lever 30, one end of which is connected by a rod 31 to a foot lever or treadle 32. The other end of the lever has a brake shoe 33 connected to it and normally supported close to but out of contact with the periphery of the disk 23. Lever 30 has an arm 33 depending from the pivot portion thereof, this arm being forked, as at 34, so as to embrace and engage a collar 35 slidably mounted on the sleeve 20 close to the disk 25. The spring 27 as before stated, normally presses against the disk 25 so as to hold the two clutch members disengaged and, consequently, the disk 25 will push against the collar 35 and hold the lever 30 normally tilted with the brake shoe 32 in contact with the disk 23. Thus disk 25 is free to rotate under the action of the belt 29 while the disk 23 and the parts connected thereto will be held against movement.

Carried by the hanger 19 is a guide 36 on which is mounted a slide 37, this guide being vertical and the slide being adapted to travel freely thereon. The slide has a stem 37 provided with a ball 38 which works within a socket 39 carried by the upper end portion of a pitman 40, this pitman being engaged by the crank arm 22. Obviously, therefore, when shaft 21 rotates, pitman 40 will be reciprocated and the slide 37 caused to work up and down upon the guide 36.

The stem 37 of the slide terminates in an car 41 on which is swiveled a block 42 secured to or formed on the lower end of an elongated blade holder 43. This blade holder is mounted to reciprocate within a channel 44 formed longitudinally within one face of a standard 45, the lower end of the standard being secured within the bearing member 6 and the sides of said standard being preferably extended along lines converging toward the channeled face of the standard, as shown in Fig. 2. The lower end of standard 45 is circular, as shown at 46 and is screwed into the bearing member 6, there being a slot 46 extending radially thereinto.

The holding member 43 is formed with a longitudinal channel 47 for the reception of a cutting blade 48. This blade is preferably in the form of an elongated thin strip of metal, the lower end of the blade being provided, in its rear edge, with an obliquely disposed slot 49 adapted to receive an anchoring pin 50 which extends transversely of the lower portion of channel 47. The upper end portion of the blade is formed with a longitudinal slot 51 and registering longitudinal slots 52 are formed in the holder 43. A block 53 is adapted to be inserted through the slots 51 and 52, this block being formed with a recess 54 in its lower face for the reception of the lower end walls of the slots 52. The upper face of the block 53 is inclined, as shown at 55 and is adapted to be contacted by a wedge 56 extending through the slots 51 and 52. This wedge supports a block 57 which also extends through the slots 51 and 52 and bears upwardly against the upper wall of the slot 51. A threaded stem 58 projects from the wedge 56 and through a plate 59 bearing against the blocks 53 and 57. This stem is engaged by nuts 60 whereby it can be adjusted lon itudinally so as to cause the wedge 56 to ride upwardly on the inc ined face 55 of block 53 and thus push block 57 against the upper end wall of slot 51 and thus draw the blade 48 taut within its holder 43. Stem 58 preferably projects through a sleeve 61 on which is mounted a pitman 62 adjustably and pivotally connected to one arm of a bell crank lever 63 fulcrumed, as at 64, upon the upper end portion of the standard 45. The other arm of this bell crank lever is pivotally and adjustably engaged by an extensible bar 65 made up of longitudinally slotted members held together by clamping screws 66. The lower end of this bar 65 projects slidably into a tubular casing 67 and has a head 68 which bears against a spring 69 supported upon the bottom of the casing. Another spring 70 is interposed between the head 66 and a cap 71 mounted upon the upper end of the housing 67. The said housing 67 is pivotally connected to an ear 72 extending from a linger ring 73, this finger ring being formed with a combined presser foot and a feeding plate 74 which is normally inclined downwardly toward the plate 3 and merges, along curved lines, into a stem 75 which is inclined upwardly. This stem is pivotally connected, as at 76, to a plate 7 7 adj ustably mounted upon the back of the standard 45. A finger piece 7 8 can be extended from the ring 73 and another finger piece 79 can be extended from the stem 7 5.

T he cutting edge of the blade 48 is eX- tended beyond the channeled face of the holder 13 and of the standard and, with said holder and standard, works within a closure plate 80 secured to the bearing member 6 and extending up to the base 46 of the standard 15, as shown in Fig. 2. This closure plate 80 prevents small particles of out material from dropping down into the hub 10 and becoming lodged upon the mechanism located under the table 1.

The edge of the blade 48 can be of any contour desired. For example, and as shown in Fig. 6, ordinary V-shaped teeth 81 can be utilized whereas, as shown in Fig. 8, ordinary saw teeth 82 can be employed. In Fig. a waved cutting edge 83 has been shown. In Fig. 1 a straight edge is utilized. Obviously, the edges can be of any other desired contours in order to produce the best results.

In using the apparatus herein described, the work to be cut is placed on the table 1 and fed up to the cutting head made up of standard Q15 and the parts connected thereto. Assuming that the disk or pulley is rotating continuously, the operator actuates the treadle 18 so as to rotate the cutting head and cause the cutting blade 48 to point in the direction in which it is to cut into the work. After this adjustment of the cutting head, the treadle 32 is actuated to lift the brake shoe 33 off of the disk 28 and shift the clutch member 26 into engagement with the clutch member 24. Shaft 21 will be promptly rotated and motion will be transmitted therefrom through the pitman 4:0 and slide 37 to the holder 13 which will thus be rapidly reciprocated within the standard 15. Each time the holder and its blade moves downwardly the presser foot 7% is brought into contact with the blade, that portion of the presser foot engaging the work being preferably roughened or serrated, as shown at 8%. As the blade and its holder move upwardly, the stem 58 pushes against pitman 62 and causes the bell crank lever 03 to be actuated. Said lever will thus be pressed downwardly through the bar 65 and spring 69 against the ring 73 and will cause the presser foot to swing in the direction indicated by the arrow inFig. 1, thus causing said presser foot to feed the work toward the blade. By means ot the ring 73 and the linger pieces 78 and 79, the presser feet can be swung bodily out of contact with the work whenever desired. Obviously, during the reciprocation of the blade and its holder, the entire cutting head can be rotated about a vertical axis so as to change the direction of the cut. Consequently, it is not necessary to shift the work, as heretofore.

It is to be unc erstood of course that instead of mounting the cutting blade in a holder, the blade can be made suflicientiy thick to enable the holder to be dispensed with. For example, and as shown in Fig. 5, the blade fits snugly within the channel 86 formed in the standard 87.

In order that the rotation of the cutting head may not be interfered with, the swivel connection between block -12 and car all is disposed in alinement with the center or axis of rotation of the bearing member 6. The cutting edge of the blade is likewise arranged along this line.

In Fig. 9 the standard 88 is provided with a bracket 89 on which e 00 is adjustably mounted. This slide is pivotally engaged by a finger ring 91 formed at one end of a presser foot 02, the said presser foot merging in an upwardly inclined stem 9-3 provided with longitudinal slot 9-1. This slot receives a guide bolt 95. The presser foot is toothed or serrated, as shoi in at 96 so as to properly shift the work when brought into engagement therewith. 0bviously in this structure when in use, the presser foot will bear continuously upon the work, holding it firmly in place while it is being acted on by the cutter, the teeth or serrations 00 preventing it from pushing away from the cutting edge of the blade after it has been pushed against said edge. By means of the slotted stem and the bolt the presser feet can be securely held in any position to which it may be adjusted.

If desired, and as shown in Fig. 13, the standard 97 can be provided with a spring presser foot 98 located at the lower end of a rack bar 90 mounted within a guide 100. A gear 101 is journaled on the standard 91' and meshes with the rack bar 99 and by retating this gear in any suitable manner, the rack bar and the presser foot 98 can be adjusted upwardly or downwardly. After such adjustment the parts can be held by a clamping screw 102.

Another modified construction has been illustrated in Fig. 11 wherein the standard 103 has a bracket 10st provided with upper and lower ears 105 and 106 respectively. A guide sleeve 107 is threaded. into the upper ear 105 and hes s against the upper end of a spring 108. l he lower end of this spring bears upon a collar 109 secured to a stern 110 which is slidably mounted in the ear 108 and within the sleeve 10'1". A. forked member 111 is secured to the lower end of the stem and straddles standard 103, each terminal of this forked member being provided with a curved spring foot 11?. adapted to contact with the work. A linger piece 118 extends from the collar and by mea. s thereof the stem 110 can be pushed upwardly against the action of the spring 108, thus to lift the foot 112 out of engagement with the work thereunder. By means of the threaded sleeve 107, the tension of the spring 108 can be regulated.

lVhile in the structure illustrated it is necessary to use foot treadles or the like for the purpose or controlling the operation of the machine, it is to be understood that if desired, the machine can be connected directly to the motor so to run continuously without the use of clutch.

Instead of utilizing a. cutting head capable of rotating about a vertical or upwardly extending axis, a structure such as shown in Fig. 16 can be employed. referring to this iigure it will be seen that the table 11d is provided with an opening over which extends a co er plate 116 hi gedly connected to the table, as shown at 117, '1 he head 118, while detachably connected to the cover plate 116 is not adapted to be rotated as in the structures heretofore described. in

stead it remains stationary relative to the cover plate at all times during the operation of the machine. A. guide hanger 1119 extends from the corer plate 11.6 and contains a slot 120 engaged by a slide 121 which is adapted to reciprocate upon a guide rod 122. This slide is actuated in the same manner as the slide 37 hereinbefore described and the wrist pin 131 outstanding from the slide engages the lower end portion of the reciprocating blade holder 12 1-. A clutch mechanism has been indicated at and a motor 126 can be suspended from the table 11%.

lit desired, and as shown in Fig. 17, the motor 127 can be connected directly to the slide 128 by connecting the pitman 129 to a crank 13% on the motor shaft.

What is claimed is LA cutting machine including a revoluble work support, a standard fixed thereto, a cutting blade mounted for reciprocation relative to the standard, a presser foot carried by the standard and extending downwardly through the work support, means for rotating the work su iport, standard, prcsser foot and blade tog about an axis ex tending along the more of the blade, and means connected to the lower end of the blaue for reciprocating the blade, the upper end of the blade being free.

A cutting machine including a reyolir ble work support, standard fixed thereto and supp d oreon, a cutting blade mounted o reciprocation relatire to and guided sol y by the standard and extendin downwardly into the work support, mean for rotating the work support, blade and stands d together about an axis extending along the active edge cit the blade, a pi sser foot revoluble with the standard, and means connected to the low end of the blade for reciprocating the cut blade.

3. A cutting machine including a revoluble work support, a standard supported by and revoluble with too work support, a cutting blade mounted for reciprocation relatire to the standard and guided solely thereby, said blade having its active edge extending along the axis of rotation of the work support, means under the control of the operator for rotating said work support, and means under the control of the operator for reciprocating the blade.

l. A cutting machine including a table, a work support, mounted for rotation thereon, a standard upstanding from and supported by said support, a cutting blade mounted for reciprocation relative to and extending downwardly into the standard and having its cutting edge extending along the axis of rotation oi the work support, the upper end of the blade being free, presser foot supported by the standard, means for rotating said standard and bearing element, and means connected to the lower end of the blade for reciprocating the cutting blade independently of such rotation.

5. A, cutting machine including a table, a work support, mounted for rotation thereon, a gear revoluble therewith, a standard upstanding from and revoluble with the work support, a cutting blade mounted for reciprocation relative to the standard and ext-ending downwardly into the work support, a presser toot carried by the standard, the active edge of the blade being extended along the axis or" rotation of the work support, means engaging the gear for rotating the work support and the parts supported thereby, and means connected to the lower end of the cutting blade for reciprocating the cutting blade independently of said rotation, the upper end of said cutting blade being free.

6. A cutting machine including a work support, a cutting head mounted for rotation thereon and extending therethrough, said cutting head including a cutting blade mounts-o for reciprocation and a presser toot, a foot lever, means operated thereby for rotating the cutting head, a continuously rotating power element, and foot controlled means for coupling said element to the cut ting blade to reciprocate the blade independently of the rotation thereof.

7. in a cutting machine the combination with a work support, of a standard extendin, uowardly therethrough, a cutting blade mounted for reciprocation relative to the standard, a presser foot adjustably connected to the standard, means for rotating the standard and the parts carried thereby about an axis extending along the active edge of the blade, and means operated by the reciprocation of the cutter blade for actuating the presser foot relative to the standard, thereby to feed material against the cutting blade.

8. A cutting machine including a work support, a standard extending upwardly thercthrough, a cutting blade mounted for reciprocation relative to the standard, a presser foot adjustably and pivotally connected to the standard, means for rotating the standard and the parts carried thereby relative to the work support, and means for reciprocating the cutting blade independent of such rotation.

9. A cutting machine including a work support, a standard upstanding therefrom, a cutting blade mounted for reciprocation relative to the standard, a presser foot adjustably and pivotally connected to the standard, means operated by the movement or the cutting blade relative to the standard for oscillating the presser foot, means for reciprocating the cutting blade, and means for rotating the standard and the parts carried thereby together and about an axis extending along the cutting edge of the blade.

10. In a cutting machine, the combination with a work support, of a standard, a cutting blade mounted for reciprocation, a presser foot pivotally connected to the standard, a lever supported by the standard, a pitman connection between one arm of the lever and the cutting blade, a connection between the other arm of the lever and the presser foot, means for reciprocating the cutting blade to actuate the lever and presser foot relative to the standard.

11. In a cutting machine, the combination with a work support, of a standard, a cutting blade mounted for reciprocation, a presser foot pivotally connected to the standard, a lever supported by the standard, a pitman connection between one arm of the lever and the cutting blade, a connection between the other arm of the lever and the presser toot, means for reciprocating the cutting blade to actuate the lever and presser foot relative to the standard, and means for rotating the standard and the parts carried thereby about an axis extending along the cutting edge of the blade.

12. In a cutting machine, the combination with a work support, of a standard, a cutting blade mounted for reciprocation, a presser foot pivotally connected to the standard, a lev r supported by the standard, a pitinan connection between one arm of the lever and the cutting blade, a connection be tween the other arm of the lever and the presser foot, means for reciprocating the cutting blade to actuate the lever and presser foot relative to the standard, said connec tion between the presser foot and the lever including cushioning means.

13. In a cutting machine, the combination with a work support, of a standard, a cut ting blade mounted for reciprocation, a presser foot pivotally connected to the standard, a lever supported by the standard,

a pitman connection between one arm of the lever and the cutting blade, a connection between the other arm of the lever and the presser foot, means for reciprocating the cutting blade to actuate the lever and presser foot relative to the standard, said connection between the lever and the presser foot being adjustable longitudinally and including a cushioning element.

l l. A cutting machine including a table having an opening therein, a cover plate normally closing the opening and movable relative to the table, actuating mechanism suspended from the cover plate and insertible through the opening in the table, a cutting element mounted for reciprocation within and extending upwardly from the cover plate, and means connecting said actu ating mechanism to the lower end of the cutting element for reciprocating said element.

15. A cutting machine including a table having an opening therein, a cover plate normally closing the opening and movable relative to the table, actuating mechanism suspended from the cover plate and in sertible through the opening in the table, a cutting element mounted for reciprocation within and extending upwardly from the cover plate, means connecting said actuating mechanism to the lower end of the cutting element for reciprocating said element, and a guide standard upstanding from the cover plate, said cutting element being slidably mounted within the standard and being free at its upper end.

16. A cutting machine including a work support, a cutting head mounted thereon and including a cutting blade mounted for reciprocation and a presser foot, said cut ting blade being extended downwardly into the work support, a continuously rotating power element, and foot controlled means for coupling said element to the lower end of the cutting blade to reciprocate said blade.

17. A cutting machine including a work support, a standard extending upwardly therethrough, a cutting blade mounted for reciprocation relative to the standard, a presser foot adjustably and pivotally con nected to the standard, and means connected to the lower end of the cutting blade for reciprocating the same.

18. A cutting machine including a work support, a standard extending upwardly therefrom, a cutting element mounted for reciprocation relative to the standard and extending downwardly into the work support, a presser foot movably connected to the standard, means connected to the lower end of the cutting element for reciprocating said element, and means operated by the reciprocation of the element for shifting the presser foot relative to the standard, thereby to feed material against the cutting element.

19. In a cutting machine, a table having an opening therein, a cover plate normally closing the opening, said plate being movable relative to the table, operating mechanism depending from and supported by the cover plate and insertible downwardly through the opening in the table, a standard extending upwardly above the cover plate, a cutting element mounted for reciprocation in the standard, means connecting said operating mechanism to the lower end of the cutting element for reciprocating said element, a presser foot, and means operated by the reciprocation of the cutting element for actuating the presser foot to feed material against said element.

20. In a cutting machine, a Work support, a cutting element mounted for reciprocation within said support and extending upwardly therefrom, and a guide slidably engaged by the cutting element and adapted to enter the out produced by said element.

21. In a cutting machine, a Work support,

a cutting element mounted for reciprocation within said support and extending upwardly therefrom, and a guide slidably engaged by the cutting element and adapted to enter the cut produced by said element, said guide being relatively thin and being secured solely at its lower end.

22. In a cutting machine, a work support, a cutting element mounted for reciprocation within said support and extending upwardly therefrom, a guide slidably engaged by the cutting element and adapted to enter the cut produced by said element, a presser foot mounted on the guide, and means operated by the reciprocation of the cutting element for actuating the presser foot to feed material against said cutting element and past the guide.

In testimony that I claim the foregoing as my own, I have hereto afliXed my signature in the presence of two witnesses.

noBT. D. rnanson.

Witnesses:

J OHN N. Berna, LABAN L. STERNnn.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

